Apparatus for dyeing cloth

ABSTRACT

THE INVENTED APPARATUS FOR DYEING CLOTH IN A FLAT STATE COMPRISES A DYEING VAT DIVIDED INTO TWO COMPARTMENTS OF SUBSTANTIALLY EQUAL VOLUMES BY MEANS OF A HOLLOW PARITION WALL HAVING FLUID JETTING OPENINGS AT ITS TOP. THE DYEING SOLUTION CONTAINED IN ONE COMPARTMENT IS JETTED FROM THE TOP OF SAID PARTITION WALL SO AS TO RAISE THE CLOTH STRIDING OVER THE PARTITION WALL AND AT THE SAME TIME, THE CLOTH IS CARRIED SUCCESSIVELY IN A FLAT STATE INTO THE ADJACENT COMPARTMENT BY THE OVERFLOW OF THE DYEING SOLUTION.

Nov. 2, 1971 GORO MATSUDA APPARATUS FOR DYEING CLOTH 2 Sheets-Sheet 1 Filed NOV. 14, 1969 ILL; )ATTORNEY Nov. 2, 1971 GORO MATSUDA 3,616,653

APPARATUS FOR DYEING CLOTH Filed Nov. 14, 1969 2 Sheets-Sheet 2 United States Patent Olfice 3,616,663 Patented Nov. 2, 1971 3,616,663 APPARATUS FOR DYEING CLOTH Goro Matsuda, 73, l-chome, Kurokawa Honduri Kitaku, Nagoya, Aichi Prefecture, Japan Filed Nov. 14, 1969, Ser. No. 876,947 Int. Cl. D06f 17/02, 39/04 US. Cl. 68-184 1 Claim ABSTRACT OF THE DISCLOSURE The hitherto known apparatus for dyeing cloth such as jigger, winch or padding type are all provided with rolls such as cloth conducting rolls, cloth squeezing rolls, cloth winding rolls or rolls for lifting cloth from a dyeing vat.

Such rolls, however, usually exert harmful tension on the cloth to be dyed. For example, tension causes contraction or elongation of the finished cloth.

Further, in another type of apparatus, the cloth tends to twist like a rope by the stream of the dyeing solution whereby the cloth is unevenly dyed and the finished cloth has the defect of having crease marks.

This invention is designed to do away with the above mentioned defects by obliterating roll or other tension exerting mechanism. According to this invention, the cloth to be dyed is carried in a flat state from one portion to the other portion of the dyeing vat by means of the flowing movement-s of the dyeing solution.

In carrying out this invention, the dyeing vat is divided into two compartments of substantially equal volumes by means of a hollow partition wall having openings at its top.

The cloth moves over the partition wall with its ends held in the bottom of each compartment by means of sinkers attached to the ends of the cloth. The dye solution contained in one compartment of the vat is supplied into the interior of the hollow partition wall by means of a pump while closing the valve at the other compartment. The dye solution thus pressed over said hollow partition wall is jetted from the top openings in said wall so as raise the cloth adjacent to said openings. The cloth is carried from one to the other compartment in a flat state by means of the overflow of the dyeing solution.

As no mechanical means is employed to transfer the cloth, no compulsory force is applied to the cloth whereby the cloth may be dyed in relaxed and unstrained state.

For an understanding of the invention principle, reference is made to the following description of typical embodiments thereof as illustrated in the accompanying drawings.

In the drawings:

FIG. 1 shows the cloth to be dyed,

FIGS. 2 and 3 show diagrammatically the function of the apparatus according to this invention,

:FIG. 4 shows the relation between the cloth and the fluid jetting partition wall,

FIG. 5 shows a plan view of one embodiment,

FIG. 6 shows a sectional view of the same,

FIG. 7 shows a plan view of the other embodiment and FIG. 8 is a sectional view of the same.

In FIGS. 1 and 2, 3 is a dyeing vat of a rectangular box type.

Said vat is divided by a hollow partition wall 4 into two compartments I and II of approximately equal volumes. A pump P is arranged below the vat 3, the input thereof being connected wit-h the compartments I and II through valves 5 and 5 respectively while the output is connected to the bottom of the hollow partition Wall 4. 11 is a steam heater for the dyeing solution. Openings 12 are provided at the top of said partition wall. The ends of the cloth A to be dyed are previously connected with lead cloths 1 and 1 by sewing or other means. Sinkers 2 and 2 are attached to the opposite ends of said lead cloths respectively. The length of each lead cloth is a little longer than the height of the partition wall 4.

In use, first, the compartments I and II are filled with dye solution, then, the cloth A is placed in the dyeing vat 3 with the sinkers 2 and 2' respectively settled at the bottoms of the compartments I and II, all the cloth A being immersed in the compartment II while the lead cloth 1 being in the compartment I with its upper end extending over the partition wall 4.

The valve 5 is closed and the valve 5 is opened. Finally, the pump P is set in motion. Then, the dye solution in the compartment :1 will be supplied into the partition wall 4 and jetted from the openings 12 to the over-riding portion of the lead cloth 1. The level in the compartment I will fall as indicated at H.

As shown in FIG. 4, the jet a from the partition wall 4 will raise the lead cloth 1 upward and at the same time the overflow b from the compartment II will induce the cloth down into the compartment I. In this manner, the cloth will be transferred in flat state gradually from the compartment II to the other compartment I until only the lead cloth 1' remains in the compartment II as shown in FIG. 3. The higher the distance H is, the quicker the cloth will travel.

Next, the valve 5 is closed and the valve 5' opened. The pump P is started again so as to supply the dye solution contained in the compartment II into the partition wall 4 whereby the cloth will be transferred gradually from the compartment I into II.

The above operations are repeated until the cloth A is completely dyed.

As is seen clearly from the above, according to this invention, the cloth to be dyed is conveyed in a flat state from one compartment to the other and vice versa by the overflow of the dye solution. No tension is exerted to the cloth, so uniform dyeing eflect will always be obtained.

FIGS. 5 and 6 show one embodiment of this inven tion in which a cylindrical vat 7 is divided into two concentric compartments III and IV of equal volumes. The top of said partition wall is provided with openings. This apparatus is adapted to dye tubular cloth such as hosiery.

FIGS. 7 and 8 show the other embodiment wherein a cylindrical vat 8 is divided into two concentric compartments of equal volumes by means of a circular partition wall 9 and further divided into three segmental portions by means of radial partitions 10.

The radial partition may preferably be adjustable so as to change the segmental form in accordance with the breadth of the cloth to be dyed.

What I claim is:

1. An apparatus for dyeing cloth in a flat state comprising, a dyeing vat, a hollow partition wall therein for dividing said vat into two compartments of substantially equal volume, said Wall being stationary and having jet holes at its top, a pump for withdrawing dyeing solution from one compartment and supplying it to both com- UNITED STATES PATENTS 3,510,251 5/1970 Fujii et al. 68184 X FOREIGN PATENTS 20,165 7/1899 Switzerland 68-484- WILLIA'M Cl. PRICE, Primary Examiner US. Cl. X.R. 68-177 

